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LM2937IMP-12 +BOM

Linear Voltage Regulator IC Positive Fixed 1 Output 500mA SOT-223-4

Produttore:

Texas Instruments, Inc
ProduttorePart #:

LM2937IMP-12
Scheda dati:

LM2937IMP-12 Scheda dati (PDF)
Output Configuration:

Positive
Output Type:

Fixed
Number Of Regulators:

1
Voltage - Input (Max):

26V
EDA/CAD Modelli:

Richiedi modelli CAD gratuiti per LM2937IMP-12

LM2937IMP-12 Descrizione generale

The LM2937 is a positive voltage regulator capable of supplying up to 500 mA of load current. The use of a PNP power transistor provides a low dropout voltage characteristic. With a load current of 500 mA the minimum input to output voltage differential required for the output to remain in regulation is typically 0.5 V (1-V ensured maximum over the full operating temperature range). Special circuitry has been incorporated to minimize the quiescent current to typically only 10 mA with a full 500-mA load current when the input to output voltage differential is greater than 3 V.

The LM2937 requires an output bypass capacitor for stability. As with most low dropout regulators, the ESR of this capacitor remains a critical design parameter, but the LM2937 includes special compensation circuitry that relaxes ESR requirements. The device is stable for all ESR below 3 Ω. This allows the use of low ESR chip capacitors.

Ideally suited for automotive applications, the LM2937 will protect itself and any load circuitry from reverse battery connections, two-battery jumps, and up to 60-V/−50-V load dump transients. Familiar regulator features such as short circuit and thermal shutdown protection are also built in.

Caratteristiche principali

Fully Specified for Operation Over −40°C
to 125°C
Output Current in Excess of 500 mA
Output Trimmed for 5% Tolerance Under all Operating
Conditions
Typical Dropout Voltage of 0.5 V at Full Rated Load
Current
Wide Output Capacitor ESR Range, up to 3 Ω
Internal Short Circuit and Thermal Overload Protection
Reverse Battery Protection
60-V Input Transient Protection
Mirror Image Insertion Protection

Specifiche

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - Linear	Series	-
Output Configuration	Positive	Output Type	Fixed
Number of Regulators	1	Voltage - Input (Max)	26V
Voltage - Output (Min/Fixed)	12V	Voltage - Output (Max)	-
Voltage Dropout (Max)	1V @ 50mA	Current - Output	400mA
Current - Quiescent (Iq)	2 mA	Current - Supply (Max)	20 mA
PSRR	-	Control Features	-
Protection Features	Over Temperature, Reverse Polarity, Short Circuit	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	LM2937

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